Bluetooth Audio

Version 2 (mihanson, 03/03/2011 12:33 pm)

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h1. Bluetooth Audio
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You will need two things:
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# Bluetooth dongle (i.e. USB type) or integrated Bluetooth on your system
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# Bluetooth audio device (Speakers, headphones, etc.)
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Plug in your Bluetooth dongle
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Install _bluez_
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<pre>$ pacman -Sy bluez</pre>
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Ensure your dongle is showing _UP_
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<pre>$ hciconfig -a
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hci0:	Type: BR/EDR  Bus: USB
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	BD Address: 00:0A:94:02:9C:8C  ACL MTU: 310:10  SCO MTU: 64:8
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	UP RUNNING PSCAN 
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	RX bytes:1074400 acl:20 sco:0 events:153362 errors:0
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	TX bytes:88752435 acl:319268 sco:0 commands:25 errors:0
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	Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80
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	Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
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	Link policy: RSWITCH HOLD SNIFF PARK 
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	Link mode: SLAVE ACCEPT 
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	Name: 'zotac-0'
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	Class: 0x480104
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	Service Classes: Capturing, Telephony
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	Device Class: Computer, Desktop workstation
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	HCI Version: 1.1 (0x1)  Revision: 0xc5c
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	LMP Version: 1.1 (0x1)  Subversion: 0xc5c
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	Manufacturer: Cambridge Silicon Radio (10)</pre>
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If not _UP_
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<pre>$ hciconfig hci0 up</pre>
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Place your Bluetooth audio device in pairing mode, then scan for it and make a note of the MAC address.
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<pre>$ hcitool scan</pre>
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Use bluez-simple-agent to pair your audio device to your dongle.
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<pre>$ bluez-simple-agent hci0 <MAC Address></pre>
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Enter your audio device's PIN number when prompted.
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If you do not have an /etc/asound.conf, create one with the following information. If you already have that file, append the following to the end. Substitute the correct MAC Address.
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<pre>#/etc/asound.conf
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 pcm.btheadset {
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    type plug
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    slave {
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        pcm {
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            type bluetooth
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            device <MAC Address> 
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            profile "auto"
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        }   
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    }   
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    hint {
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        show on
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        description "Bluetooth headset audio output device"
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    }   
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 }
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 ctl.btheadset {
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   type bluetooth
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 }</pre>
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Check that your audio device is seen by ALSA
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<pre>$ aplay -L
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...<snip>...
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btheadset
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    Bluetooth headset audio output device</pre>
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Main Menu -> Service Menu -> MythTV Configuration -> Setup -> General -> 4th Page
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<pre>Audio output device: ALSA:btheadset</pre>
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_Note: you may have to manually type the above setting into the Audio output device field_
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Test out your new Bluetooth headset!
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h3. Troubleshooting (Work in progress)
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* No audio: Try rebooting your machine.
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* Adjust the class in /etc/bluetooth/main.conf